ab f(x)dx = ax1 f(x)dx + xx12 f(x)dx + .....+ xb4 f(x)dx

kDerivative

Your calculator performs differential calculations by approximating the derivative based on centered difference approximation. Calculation is performed using the function shown below.

d/dx(

A Syntax and Input

d/dx( f (x), a, tol)f(x): Function of x (Input the function used by variable X.)• All variables other than X are viewed as constants.a: Value of point (derivative point) of desired derivative coefficient

tol: Error tolerance range (Can be input only when linear display is being used.)

• This parameter can be omitted. In that case, a tolerance of 1 × 10–10is used.

Example: To obtain the differential coefficient at point x = π for the function y = sin(x)

(tol value not input)

2

 

Vz – {MATH}2(d/dX)sS0(X)).....1

B

(Continuing from 1, above) e'1Z(π)c2E

b

(Continuing from 1, above) ,1Z(π)'2)E

ARemarks

Use of d/dx( is supported in the COMP, SD, REG, and EQN Modes only.

The following functions cannot be input for the f(x), a, and tol parameters: (, d/dx(, d2/dx2(, Σ(. In addition, the Pol( and Rec( functions, and the random number functions cannot be input for the f(x) parameter.

In the case of differentiation of a trigonometric function, select Rad for the angle unit.

Specifying a smaller value for the tol parameter tends to improve precision, but it also causes the calculation to take more time. Specify a tol value greater than 1 × 10–14.

You will not be able to input a tol value while using natural display.

Non-consecutive points, abrupt fluctuation, extremely large or small points, inflection points, and the inclusion of points that cannot be differentiated, or a differential point or

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